# NhttpConnectionDebugConfig.java

    /**
     *  Licensed to the Apache Software Foundation (ASF) under one
     *  or more contributor license agreements.  See the NOTICE file
     *  distributed with this work for additional information
     *  regarding copyright ownership.  The ASF licenses this file
     *  to you under the Apache License, Version 2.0 (the
     *  "License"); you may not use this file except in compliance
     *  with the License.  You may obtain a copy of the License at
     *
     *   http://www.apache.org/licenses/LICENSE-2.0
     *
     *  Unless required by applicable law or agreed to in writing,
     *  software distributed under the License is distributed on an
     *   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     *  KIND, either express or implied.  See the License for the
     *  specific language governing permissions and limitations
     *  under the License.
     */

    package org.apache.synapse.transport.nhttp.debug;

    import org.apache.synapse.transport.nhttp.NHttpConfiguration;

    import java.util.ArrayList;
    import java.util.List;

    /**
     *
     */
    public class NhttpConnectionDebugConfig {

        private static final String KEY_VALUE_SEPARATOR_PROPERTY = "nhttp.debug.key.value.separator";
        private static final String FIELD_SEPARATOR_PROPERTY = "nhttp.debug.field.separator";
        private static final String STATEMENT_SEPARATOR_PROPERTY = "nhttp.debug.statement.separator";
        // "all" | "none" | "foo,bar"
        private static final String HEADER_INFO_PROPERTY = "nhttp.debug.headers";

        private static final String HEADER_INFO_ALL = "all";
        private static final String HEADER_INFO_NONE = "none";

        private static final String DEFAULT_KEY_VALUE_SEPARATOR = "=";
        private static final String DEFAULT_FIELD_SEPARATOR = ", ";
        private static final String DEFAULT_STATEMENT_SEPARATOR = "\n";

        private String keyValueSeparator;
        private String fieldSeparator;
        private String statementSeparator;
        private List<String> headers;
        private boolean noHeaders = false;
        private boolean allHeaders = true;

        private static NhttpConnectionDebugConfig _instance;

        private NhttpConnectionDebugConfig() {

            this.keyValueSeparator = NHttpConfiguration.getInstance().getStringValue(
                    KEY_VALUE_SEPARATOR_PROPERTY, DEFAULT_KEY_VALUE_SEPARATOR);
            this.fieldSeparator = NHttpConfiguration.getInstance().getStringValue(
                    FIELD_SEPARATOR_PROPERTY, DEFAULT_FIELD_SEPARATOR);
            this.statementSeparator = NHttpConfiguration.getInstance().getStringValue(
                    STATEMENT_SEPARATOR_PROPERTY, DEFAULT_STATEMENT_SEPARATOR);
            String headerSet = NHttpConfiguration.getInstance().getStringValue(
                    HEADER_INFO_PROPERTY, HEADER_INFO_ALL);
            if (HEADER_INFO_NONE.equals(headerSet)) {
                this.noHeaders = true;
            } else if (HEADER_INFO_ALL.equals(headerSet)) {
                this.allHeaders = true;
            } else {
                String[] headerNames = headerSet.split(",");
                this.headers = new ArrayList<String>();
                for (String headerName : headerNames) {
                    this.headers.add(headerName.trim());
                }
            }
        }

        public static NhttpConnectionDebugConfig getInstance() {
            if (_instance == null) {
                _instance = new NhttpConnectionDebugConfig();
            }
            return _instance;
        }

        public String getKeyValueSeparator() {
            return keyValueSeparator;
        }

        public String getFieldSeparator() {
            return fieldSeparator;
        }

        public String getStatementSeparator() {
            return statementSeparator;
        }

        public List<String> getHeaders() {
            return headers;
        }

        public boolean isNoHeaders() {
            return noHeaders;
        }

        public boolean isAllHeaders() {
            return allHeaders;
        }
    }